Well the white blinky light is mining, the red light is power, but no idea what the blue light is.

I heard someone was putting blue led lighted fans on the ones they were selling - so if the fan has stopped working, then that would be it.

We'll have to await sidehack's comments if it's not an extra blue fan led/fan problem.

[The blue leds are around the fan, the fan and the lights are both working though. So its not the Pi or the Pi usb port just plugged in a nupac and set it going, hashing no problem. So ha to be something on the 909]